Vertiv™ eSure™ Power Extend Converter Mounting Bracket and Door Kit Installation Manual
Proprietary and Confidential © 2023 Vertiv Group Corp.
2 Installing the Power Extend Converter into a Distribution
Position
2.1 Important Safety Instructions
DANGER! Adhere to the “Important Safety Instructions” starting on page v and those listed in the power system manual.
ALERT! Only install the power extend converter into a -48 VDC distribution position. Non-repairable damage will occur if the
power extend converter is plugged into a +24 VDC distribution position.
NOTE! The power extend converter can be inserted or removed with power applied (hot swappable) as long as the power
extend converter is inserted/removed with the enable/disable switch in the disabled position (see Figure 12 on page 15).
WARNING! The power extend converter and front mounting bracket becomes very hot during power extend converter
operation at heavy load. Wear heat resistant gloves or allow the power extend converter to cool down before removing.
2.2 Restrictions
Refer to the power extend converter instruction manual (UM565050) for wire sizing restrictions.
Refer to Table 4 for spacing and power restrictions. This table shows how many converters can be placed side by side before
skipping a single space at certain average power levels. These power levels pertain to the average output power (busy hour average
power) drawn by the load including any power loss in the cable. The peak power available from each unit remains at 1000 watts
regardless of spacing or location. Use the calculator tool that can be obtained at https://www.vertiv.com/en-us/products-
catalog/critical-power/dc-power-systems/esure-power-extend-converter-c4858-1000/#/downloads to determine the necessity,
quantity and spacing requirement of the Power Extend Converter based on the RRU type (or peak load), use application (host power
system), trunk and jumper cable size and length, minimum source voltage and minimum RRU operating voltage.
NOTE! When installing a power extend converter mounting bracket kit covered by these instructions onto a stand-alone
distribution cabinet installed in an outside plant enclosure, leave the front door off the stand-alone distribution cabinet when
complete with the installation.
Table 4: Spacing and Power Restrictions: Spec. No. 545277 and 520276 Operating in a 40°C Ambient
Distribution Row
Watts Per Power Extend Converter
No Spaces 1 Pole / Space 2 Pole / Space 3 Pole / Space 4 Pole / Space
Row 1 Only 375 W 900 W 750 W 600 W 500 W
ALERT! When circuit breaker(s) and Power Extend Converter(s) (Model C48/58-1000B, Spec. No. 1C48581000B) are
deployed in the same enclosure, circuit breaker(s) can only be loaded to 70% of rated value.